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package ice
import (
"net"
)
// CandidateRelay ...
type CandidateRelay struct {
candidateBase
relayProtocol string
onClose func() error
}
// CandidateRelayConfig is the config required to create a new CandidateRelay
type CandidateRelayConfig struct {
CandidateID string
Network string
Address string
Port int
Component uint16
Priority uint32
Foundation string
RelAddr string
RelPort int
RelayProtocol string
OnClose func() error
}
// NewCandidateRelay creates a new relay candidate
func NewCandidateRelay(config *CandidateRelayConfig) (*CandidateRelay, error) {
candidateID := config.CandidateID
if candidateID == "" {
candidateID = globalCandidateIDGenerator.Generate()
}
ip := net.ParseIP(config.Address)
if ip == nil {
return nil, ErrAddressParseFailed
}
networkType, err := determineNetworkType(config.Network, ip)
if err != nil {
return nil, err
}
return &CandidateRelay{
candidateBase: candidateBase{
id: candidateID,
networkType: networkType,
candidateType: CandidateTypeRelay,
address: config.Address,
port: config.Port,
resolvedAddr: &net.UDPAddr{IP: ip, Port: config.Port},
component: config.Component,
foundationOverride: config.Foundation,
priorityOverride: config.Priority,
relatedAddress: &CandidateRelatedAddress{
Address: config.RelAddr,
Port: config.RelPort,
},
},
relayProtocol: config.RelayProtocol,
onClose: config.OnClose,
}, nil
}
// RelayProtocol returns the protocol used between the endpoint and the relay server.
func (c *CandidateRelay) RelayProtocol() string {
return c.relayProtocol
}
func (c *CandidateRelay) close() error {
err := c.candidateBase.close()
if c.onClose != nil {
err = c.onClose()
c.onClose = nil
}
return err
}
func (c *CandidateRelay) copy() (Candidate, error) {
cc, err := c.candidateBase.copy()
if err != nil {
return nil, err
}
if ccr, ok := cc.(*CandidateRelay); ok {
ccr.relayProtocol = c.relayProtocol
}
return cc, nil
}
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